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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Manager	Matti Karttunen	USA	1 2 3 4 5
2	Sales Representative	Matti Karttunen	Brazil	1 2 3 4 5
3	Marketing Assistant	Elizabeth Lincoln	Brazil	1 2 3 4 5
4	Accounting Manager	Patricio Simpson	France	1 2 3 4 5
5	Marketing Manager	Jaime Yorres	Argentina	1 2 3 4 5
6	Accounting Manager	Howard Snyder	Germany	1 2 3 4 5
7	Owner	Georg Pipps	Brazil	1 2 3 4 5
8	Marketing Manager	Howard Snyder	Bulgaria	1 2 3 4 5
9	Sales Manager	Pascale Cartrain	Brazil	1 2 3 4 5
10	Sales Associate	Patricio Simpson	Argentina	1 2 3 4 5
11	Sales Representative	Patricio Simpson	Argentina	1 2 3 4 5
12	Sales Associate	Pascale Cartrain	England	1 2 3 4 5
13	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
14	Sales Manager	Georg Pipps	Bulgaria	1 2 3 4 5
15	Marketing Assistant	Howard Snyder	Germany	1 2 3 4 5
16	Sales Associate	Elizabeth Lincoln	England	1 2 3 4 5
17	Sales Associate	Patricio Simpson	Bulgaria	1 2 3 4 5
18	Marketing Assistant	Elizabeth Lincoln	Germany	1 2 3 4 5
19	Accountant	Paul Henriot	Italy	1 2 3 4 5
20	Sales Agent	Jaime Yorres	Austria	1 2 3 4 5
21	Sales Agent	Pascale Cartrain	Argentina	1 2 3 4 5
22	Sales Consultant	Patricio Simpson	England	1 2 3 4 5
23	Sales Manager	Jaime Yorres	Italy	1 2 3 4 5
24	Owner	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
25	Sales Manager	Paul Henriot	France	1 2 3 4 5
26	Sales Manager	Pascale Cartrain	USA	1 2 3 4 5
27	Sales Consultant	Hanna Moos	Bulgaria	1 2 3 4 5
28	Marketing Assistant	Antonio Moreno	Austria	1 2 3 4 5
29	Sales Consultant	Patricio Simpson	France	1 2 3 4 5
30	Sales Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
31	Marketing Assistant	Elizabeth Lincoln	Brazil	1 2 3 4 5
32	Marketing Manager	Pascale Cartrain	France	1 2 3 4 5
33	Accountant	Patricio Simpson	Italy	1 2 3 4 5
34	Accountant	Paul Henriot	USA	1 2 3 4 5
35	Marketing Assistant	Hanna Moos	Spain	1 2 3 4 5
36	Accountant	Jaime Yorres	Germany	1 2 3 4 5
37	Marketing Assistant	Pascale Cartrain	France	1 2 3 4 5
38	Accountant	Jaime Yorres	Germany	1 2 3 4 5
39	Sales Consultant	Antonio Moreno	Bulgaria	1 2 3 4 5
40	Sales Associate	Howard Snyder	Argentina	1 2 3 4 5
41	Sales Representative	Paul Henriot	Brazil	1 2 3 4 5
42	Sales Consultant	Georg Pipps	England	1 2 3 4 5
43	Marketing Assistant	Paul Henriot	France	1 2 3 4 5
44	Owner	Pascale Cartrain	Austria	1 2 3 4 5
45	Marketing Assistant	Paul Henriot	Bulgaria	1 2 3 4 5
46	Sales Associate	Georg Pipps	France	1 2 3 4 5
47	Sales Consultant	Matti Karttunen	Brazil	1 2 3 4 5
48	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
49	Sales Agent	Jaime Yorres	Bulgaria	1 2 3 4 5
50	Sales Agent	Jaime Yorres	Argentina	1 2 3 4 5
51	Sales Agent	Patricio Simpson	Argentina	1 2 3 4 5
52	Marketing Manager	Matti Karttunen	Germany	1 2 3 4 5
53	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
54	Sales Manager	Paul Henriot	USA	1 2 3 4 5
55	Sales Consultant	Hanna Moos	Brazil	1 2 3 4 5
56	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
57	Sales Associate	Matti Karttunen	Argentina	1 2 3 4 5
58	Sales Manager	Paul Henriot	Bulgaria	1 2 3 4 5
59	Owner	Paul Henriot	Italy	1 2 3 4 5
60	Sales Manager	Georg Pipps	Austria	1 2 3 4 5
61	Accounting Manager	Paul Henriot	England	1 2 3 4 5
62	Sales Agent	Jaime Yorres	Italy	1 2 3 4 5
63	Marketing Manager	Patricio Simpson	Spain	1 2 3 4 5
64	Marketing Manager	Hanna Moos	Argentina	1 2 3 4 5
65	Sales Associate	Pascale Cartrain	Brazil	1 2 3 4 5
66	Accountant	Pascale Cartrain	Austria	1 2 3 4 5
67	Marketing Manager	Jaime Yorres	Spain	1 2 3 4 5
68	Marketing Assistant	Elizabeth Lincoln	USA	1 2 3 4 5
69	Marketing Manager	Hanna Moos	Germany	1 2 3 4 5
70	Sales Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
71	Sales Agent	Georg Pipps	USA	1 2 3 4 5
72	Accounting Manager	Hanna Moos	Argentina	1 2 3 4 5
73	Sales Associate	Hanna Moos	Brazil	1 2 3 4 5
74	Sales Associate	Georg Pipps	Spain	1 2 3 4 5
75	Marketing Assistant	Howard Snyder	Spain	1 2 3 4 5
76	Marketing Assistant	Patricio Simpson	Spain	1 2 3 4 5
77	Sales Consultant	Matti Karttunen	Bulgaria	1 2 3 4 5
78	Sales Associate	Georg Pipps	Germany	1 2 3 4 5
79	Owner	Pascale Cartrain	Brazil	1 2 3 4 5
80	Sales Associate	Jaime Yorres	Spain	1 2 3 4 5
81	Sales Manager	Pascale Cartrain	Italy	1 2 3 4 5
82	Accounting Manager	Hanna Moos	USA	1 2 3 4 5
83	Sales Consultant	Patricio Simpson	France	1 2 3 4 5
84	Sales Associate	Pascale Cartrain	Germany	1 2 3 4 5
85	Sales Agent	Georg Pipps	Austria	1 2 3 4 5
86	Sales Manager	Patricio Simpson	France	1 2 3 4 5
87	Sales Associate	Patricio Simpson	Italy	1 2 3 4 5
88	Owner	Elizabeth Lincoln	USA	1 2 3 4 5
89	Marketing Assistant	Matti Karttunen	England	1 2 3 4 5
90	Accountant	Elizabeth Lincoln	Argentina	1 2 3 4 5
91	Sales Manager	Georg Pipps	Brazil	1 2 3 4 5
92	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
93	Sales Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
94	Accounting Manager	Paul Henriot	Italy	1 2 3 4 5
95	Accounting Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
96	Sales Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
97	Sales Associate	Hanna Moos	Germany	1 2 3 4 5
98	Marketing Manager	Elizabeth Lincoln	England	1 2 3 4 5
99	Sales Associate	Matti Karttunen	Argentina	1 2 3 4 5
100	Marketing Manager	Patricio Simpson	Argentina	1 2 3 4 5


...271 272 273 274 275 276 277 278 279 280 ... Item 276001 to 277000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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